Collecting, processing and control circuit for ultrasonic phased array borehole wall imaging system

Abstract

The invention discloses a collecting, processing and control circuit for an ultrasonic phased array borehole wall imaging system. The circuit includes an FPGA chip (1), a DSP chip (2), a CAN bus interface chip (4) and SRAM storage chips (6); the CAN bus interface chip (4) is used for sending the parameter arrangement and commands of a ground system to the DSP chip (2) and transmitting packed dataprocessed by the DSP chip (2) to the ground system; the DSP chip (2) is used for sending the parameter arrangement and commands of the ground system to the FPGA chip (1) and reading the data stored inthe SRAM storage chips (6) to process; and the FPGA chip (1) is used for explaining various commands issued by the ground system, finishing the collecting of borehole wall echo signals, performing digit signal processing on the collected data, realizing the digital beam forming of the echo signals and the extracting of borehole wall echo amplitude and arrival time data, and finally writing extracted results into the SRAM storage chips (6).

Description

technical field [0001] The invention relates to the technical field of oil exploitation equipment, in particular to an acquisition, processing and control circuit of an ultrasonic phased array well wall imaging system. Background technique [0002] The underground environment of the oil well is harsh, and the well wall is prone to cracks, corrosion, deformation and other damages, which will cause safety hazards and shorten the life of the oil well. Therefore, it is of great significance for the detection and protection of the well wall of the oil well. Ultrasonic wellbore imaging detection technology uses the echo amplitude information reflected by the wellbore wall to visually display the wellbore condition in the form of an echo amplitude map, so as to achieve the purpose of monitoring the quality of the wellbore. As a kind of ultrasonic borehole wall imaging detection, ultrasonic phased array borehole wall imaging detection technology has received extensive attention in r...

AI Technical Summary

Problems solved by technology

In addition, the entire circuit is required to be able to work stably under high temperature and high pressure. The current commonly used ground ultrasonic phased array acquisition, processing and control circuits cannot meet the above requirements.

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